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A1 الركابي، قصي قاسم جايد AB The aim of the present research is to find out the effectiveness of Roving Reporter strategy in the students' achievement of the four-grade science in biology and their achievement motivation through investigating the following two hypotheses: 1) There is no statistically significant difference in the significance level of (0.05) between the average scores of the experimental group students who will be taught by Roving Reporter strategy and the average scores of the control group students who will be taught by the same material by the traditional method in the biology achievement test. 2) There is no statistically significant difference in the significance level of (0.05) between the average scores of the experimental group students who will be taught by Roving Reporter strategy and the average scores of the control group students who will be taught the same material by the traditional method in the achievement motivation scale. The sample of the research consisted of (60) students of four-grade science from Abe dharr Al-Ghafary preparatory in the city Baghdad Rusafa- three for the school year (2016-2017) and this school to apply this experience. Students selected randomly into two groups each group consists of (30) students. Both groups were equivalent in number of variables such as: Achievement motivation. At investigating the hypotheses, the research is built on an achievement test that consists of (32) items, (29) items of a multiple-choice type and (3) items of essay question, the validity and reliability are checked. The researcher adopted the scale of (Al-Janaby, 2013) to measure the study achievement motivation after checked by a group of experts to make the suitable changes according to the validity and reliability. At the final the scale consists of (50) items. After the implementation of experiment in second course for the study Year of (2017-2016) from the researcher and his research groups according to study plans that prepared. The researcher applied the achievement test and measures the study achievement motivation for the two groups experimental and control. The data was processed statistically by using (T-test) for equal to two independent samples. The results showed superiority of the experimental group students who studied according to Roving Reporter strategy on the control group students who studied by the traditional method in variables of study achievement and achievement motivation. In the light of the results the researcher concluded that the Roving Reporter strategy has positive effect in biology achievement and achievement motivation. According to these resells, the researcher has some recommendations and suggestions sac has: to use Roving Reporter strategy to teach mathematics and make more studies that use the active learning strategy in other variables that not contained in this study. (Published abstract) http://search.shamaa.org/abstract_en.gif OP ص ص. 445-474 T1 فاعلية استراتيجية المندوب المتنقل في تحصيل مادة علم الأحياء والدافعية العقلية عند طلاب الصف الرابع العلمي [مقال] UL https://www.iasj.net/iasj/article/149251 النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif